The Qubely WordPress plugin before 1.8.5 does not validate and escape some of its block options before outputting them back in a page/post where the block is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.
El complemento Qubely WordPress anterior a 1.8.5 no valida ni escapa algunas de sus opciones de bloqueo antes de devolverlas a una página/publicación donde está incrustado el bloque, lo que podría permitir a los usuarios con el rol de colaborador y superior realizar ataques de cross site scripting almacenado.
The Quebely plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘className’ parameter in versions up to, and including, 1.8.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
